Antibiotic azo dye comprising quaternary ammonium salt group and its preparation and uses

Antibacterial azo dye containing quaternary ammonium salt group, wherein: structural formula as Formula (1) below: wherein: A Representative quaternary ammonium salt group, B is an amino group or an aryl pyrazoline one coupling group. Dyes according to the present invention on a conventional acrylic cationic dye staining dye, the color fastness to meet the requirements. Dye solution and dyed acrylic fiber of Staphylococcus aureus and Escherichia coli as represented by gram-positive bacteria and Gram-negative bacteria have to kill or inhibit.